UPDATE DOAN SET ThoiHanNop='04/08/2012' WHERE MaDoAn=2
UPDATE DOAN SET ThoiHanNop='07/30/2012' WHERE MaDoAn=2
UPDATE DOAN SET ThoiHanNop='07/29/2012' WHERE MaDoAn=2
select * from DOAN
select * from MONHOC
select * from DE_SINHVIEN
DELETE FROM DE_SINHVIEN WHERE MaSinhVien='0812008'
UPDATE MONHOC SET ThoiGianKetThuc='8/1/2012' WHERE MaMonHoc=9

DECLARE @Ketqua NVARCHAR(100)
EXEC usp_DangKyDoAn_Error '0812008', 1, '00:00:01', @Ketqua output
PRINT @Ketqua